License

Installation

Tests

The unit tests included with the package leverage the Dojo Objective Harness (D.O.H.). In order to leverage
D.O.H. it is assumed that the dojo package and the util directory of Dojo which contains the doh package are
installed as siblings of the setten package, for example:

lib/dojo

lib/setten

lib/util/doh

This can be changed by modifying the setten/tests/index.js package map.

The execute the tests, execute the following command from the /setten directory:

$ node tests

Modules

setten/dfs

This is a wrapper for the NodeJS fs module, that takes the asynchronous callback calls and converts them into a
dojo/promise Promise based return.

For example, you might have written code like this in "plain" NodeJS:

var fs =require("fs");

fs.readFile("/etc/passwd",function(err,data){

if(err)throw err;

console.log(data);

});

This could now be rewritten as:

require(["setten/dfs"],function(dfs){

dfs.readFile("/etc/passwd").then(function(data){

console.log(data);

},function(err){

throw err;

});

});

setten/dfs-extra

This is a wrapper for the fs-extra module. This takes the extra functions provides by this library and
provides a dojo/promise based return.

setten/util

This is a utility library used internally within the package. It provides a convenience function that converts
callback functions into a dojo/promise Promise return. It would work like this:

require(["setten/util"],function(util){

varfn=function(data,callback){

// do something async

callback(err, info);

}

var pfn =util.asDeferred(fn,this,false);

pfn("something").then(function(info){

// async return

},function(err){

// handle error

});

});

The arguments for asDeferred() are:

Argument

Type

Description

fn

Function

The function whos return should be converted to a Promise.

self

Object?

The scope to be used in conjunction with the function. Defaults to this.

noError

Boolean?

true if the callback does not include an error argument. Defaults to false.

Because promises can only be fulfilled with a single value, if the callback is called with more than one argument
(minus the error argument) then the promise is fulfilled with the supplied arguments as an array, otherwise it just
fufills with the single argument it was passed.